src/gallium/state_trackers/dri/dri_drawable.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009, VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27 /*
  28  * Author: Keith Whitwell <keithw@vmware.com>
  29  * Author: Jakob Bornecrantz <wallbraker@gmail.com>
  30  */
  31
  32 #include "dri_screen.h"
  33 #include "dri_context.h"
  34 #include "dri_drawable.h"
  35 #include "dri1.h"
  36
  37 #include "main/mtypes.h"
  38 #include "main/renderbuffer.h"
  39 #include "state_tracker/st_context.h"
  40 #include "state_tracker/st_public.h"
  41 #include "state_tracker/st_cb_fbo.h"
  42 #include "state_tracker/drm_api.h"
  43
  44 #include "pipe/p_screen.h"
  45 #include "util/u_format.h"
  46 #include "util/u_memory.h"
  47 #include "util/u_inlines.h"
  48
  49 static struct pipe_surface *
  50 dri_surface_from_handle(struct drm_api *api,
  51                         struct pipe_screen *screen,
  52                         unsigned handle,
  53                         enum pipe_format format,
  54                         unsigned width, unsigned height, unsigned pitch)
  55 {
  56    struct pipe_surface *surface = NULL;
  57    struct pipe_texture *texture = NULL;
  58    struct pipe_texture templat;
  59    struct winsys_handle whandle;
  60
  61    memset(&templat, 0, sizeof(templat));
  62    templat.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
  63    templat.target = PIPE_TEXTURE_2D;
  64    templat.last_level = 0;
  65    templat.depth0 = 1;
  66    templat.format = format;
  67    templat.width0 = width;
  68    templat.height0 = height;
  69
  70    memset(&whandle, 0, sizeof(whandle));
  71    whandle.handle = handle;
  72    whandle.stride = pitch;
  73
  74    texture = screen->texture_from_handle(screen, &templat, &whandle);
  75
  76    if (!texture) {
  77       debug_printf("%s: Failed to blanket the buffer with a texture\n", __func__);
  78       return NULL;
  79    }
  80
  81    surface = screen->get_tex_surface(screen, texture, 0, 0, 0,
  82                                      PIPE_BUFFER_USAGE_GPU_READ |
  83                                      PIPE_BUFFER_USAGE_GPU_WRITE);
  84
  85    /* we don't need the texture from this point on */
  86    pipe_texture_reference(&texture, NULL);
  87    return surface;
  88 }
  89
  90 /**
  91  * Pixmaps have will have the same name of fake front and front.
  92  */
  93 static boolean
  94 dri2_check_if_pixmap(__DRIbuffer *buffers, int count)
  95 {
  96    boolean found = FALSE;
  97    boolean is_pixmap = FALSE;
  98    unsigned name;
  99    int i;
 100
 101    for (i = 0; i < count; i++) {
 102       switch (buffers[i].attachment) {
 103       case __DRI_BUFFER_FRONT_LEFT:
 104       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 105          if (found) {
 106             is_pixmap = buffers[i].name == name;
 107          } else {
 108             name = buffers[i].name;
 109             found = TRUE;
 110          }
 111       default:
 112          continue;
 113       }
 114    }
 115
 116    return is_pixmap;
 117 }
 118
 119 /**
 120  * This will be called a drawable is known to have been resized.
 121  */
 122 void
 123 dri_get_buffers(__DRIdrawable * dPriv)
 124 {
 125
 126    struct dri_drawable *drawable = dri_drawable(dPriv);
 127    struct pipe_surface *surface = NULL;
 128    struct dri_screen *st_screen = dri_screen(drawable->sPriv);
 129    struct pipe_screen *screen = st_screen->pipe_screen;
 130    __DRIbuffer *buffers = NULL;
 131    __DRIscreen *dri_screen = drawable->sPriv;
 132    __DRIdrawable *dri_drawable = drawable->dPriv;
 133    struct drm_api *api = st_screen->api;
 134    boolean have_depth = FALSE;
 135    int i, count;
 136
 137    if ((dri_screen->dri2.loader
 138         && (dri_screen->dri2.loader->base.version > 2)
 139         && (dri_screen->dri2.loader->getBuffersWithFormat != NULL))) {
 140       buffers = (*dri_screen->dri2.loader->getBuffersWithFormat)
 141                 (dri_drawable, &dri_drawable->w, &dri_drawable->h,
 142                  drawable->attachments, drawable->num_attachments,
 143                  &count, dri_drawable->loaderPrivate);
 144    } else {
 145       assert(dri_screen->dri2.loader);
 146       buffers = (*dri_screen->dri2.loader->getBuffers) (dri_drawable,
 147                                                         &dri_drawable->w,
 148                                                         &dri_drawable->h,
 149                                                         drawable->attachments,
 150                                                         drawable->
 151                                                         num_attachments, &count,
 152                                                         dri_drawable->
 153                                                         loaderPrivate);
 154    }
 155
 156    if (buffers == NULL) {
 157       return;
 158    }
 159
 160    /* set one cliprect to cover the whole dri_drawable */
 161    dri_drawable->x = 0;
 162    dri_drawable->y = 0;
 163    dri_drawable->backX = 0;
 164    dri_drawable->backY = 0;
 165    dri_drawable->numClipRects = 1;
 166    dri_drawable->pClipRects[0].x1 = 0;
 167    dri_drawable->pClipRects[0].y1 = 0;
 168    dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 169    dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 170    dri_drawable->numBackClipRects = 1;
 171    dri_drawable->pBackClipRects[0].x1 = 0;
 172    dri_drawable->pBackClipRects[0].y1 = 0;
 173    dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 174    dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 175
 176    if (drawable->old_num == count &&
 177        drawable->old_w == dri_drawable->w &&
 178        drawable->old_h == dri_drawable->h &&
 179        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0) {
 180        return;
 181    } else {
 182       drawable->old_num = count;
 183       drawable->old_w = dri_drawable->w;
 184       drawable->old_h = dri_drawable->h;
 185       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 186    }
 187
 188    drawable->is_pixmap = dri2_check_if_pixmap(buffers, count);
 189
 190    for (i = 0; i < count; i++) {
 191       enum pipe_format format = 0;
 192       int index = 0;
 193
 194       switch (buffers[i].attachment) {
 195       case __DRI_BUFFER_FRONT_LEFT:
 196          if (!st_screen->auto_fake_front)
 197             continue;
 198          /* fallthrough */
 199       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 200          index = ST_SURFACE_FRONT_LEFT;
 201          format = drawable->color_format;
 202          break;
 203       case __DRI_BUFFER_BACK_LEFT:
 204          index = ST_SURFACE_BACK_LEFT;
 205          format = drawable->color_format;
 206          break;
 207       case __DRI_BUFFER_DEPTH:
 208       case __DRI_BUFFER_DEPTH_STENCIL:
 209       case __DRI_BUFFER_STENCIL:
 210          index = ST_SURFACE_DEPTH;
 211          format = drawable->depth_stencil_format;
 212          break;
 213       case __DRI_BUFFER_ACCUM:
 214       default:
 215          assert(0);
 216       }
 217
 218       if (index == ST_SURFACE_DEPTH) {
 219          if (have_depth)
 220             continue;
 221          else
 222             have_depth = TRUE;
 223       }
 224
 225       surface = dri_surface_from_handle(api,
 226                                         screen,
 227                                         buffers[i].name,
 228                                         format,
 229                                         dri_drawable->w,
 230                                         dri_drawable->h, buffers[i].pitch);
 231
 232       switch (buffers[i].attachment) {
 233       case __DRI_BUFFER_FRONT_LEFT:
 234       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 235       case __DRI_BUFFER_BACK_LEFT:
 236          drawable->color_format = surface->format;
 237          break;
 238       case __DRI_BUFFER_DEPTH:
 239       case __DRI_BUFFER_DEPTH_STENCIL:
 240       case __DRI_BUFFER_STENCIL:
 241          drawable->depth_stencil_format = surface->format;
 242          break;
 243       case __DRI_BUFFER_ACCUM:
 244       default:
 245          assert(0);
 246       }
 247
 248       st_set_framebuffer_surface(drawable->stfb, index, surface);
 249       pipe_surface_reference(&surface, NULL);
 250    }
 251    /* this needed, or else the state tracker fails to pick the new buffers */
 252    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 253 }
 254
 255 /**
 256  * These are used for GLX_EXT_texture_from_pixmap
 257  */
 258 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
 259                           GLint format, __DRIdrawable *dPriv)
 260 {
 261    struct dri_drawable *drawable = dri_drawable(dPriv);
 262    struct pipe_surface *ps;
 263
 264    if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
 265       struct gl_renderbuffer *rb =
 266          st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
 267       _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
 268    }
 269
 270    dri_get_buffers(drawable->dPriv);
 271    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 272
 273    if (!ps)
 274       return;
 275
 276    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
 277                            ST_TEXTURE_RECT, 0, drawable->color_format);
 278 }
 279
 280 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 281                          __DRIdrawable *dPriv)
 282 {
 283    dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 284 }
 285
 286 void
 287 dri_update_buffer(struct pipe_screen *screen, void *context_private)
 288 {
 289    struct dri_context *ctx = (struct dri_context *)context_private;
 290
 291    if (ctx->d_stamp == *ctx->dPriv->pStamp &&
 292        ctx->r_stamp == *ctx->rPriv->pStamp)
 293       return;
 294
 295    ctx->d_stamp = *ctx->dPriv->pStamp;
 296    ctx->r_stamp = *ctx->rPriv->pStamp;
 297
 298    /* Ask the X server for new renderbuffers. */
 299    dri_get_buffers(ctx->dPriv);
 300    if (ctx->dPriv != ctx->rPriv)
 301       dri_get_buffers(ctx->rPriv);
 302
 303 }
 304
 305 void
 306 dri_flush_frontbuffer(struct pipe_screen *screen,
 307                       struct pipe_surface *surf, void *context_private)
 308 {
 309    struct dri_context *ctx = (struct dri_context *)context_private;
 310    struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
 311    __DRIdrawable *dri_drawable = ctx->dPriv;
 312    __DRIscreen *dri_screen = ctx->sPriv;
 313
 314    /* XXX Does this function get called with DRI1? */
 315
 316    if (ctx->dPriv == NULL) {
 317       debug_printf("%s: no drawable bound to context\n", __func__);
 318       return;
 319    }
 320
 321 #if 0
 322    /* TODO if rendering to pixmaps is slow enable this code. */
 323    if (drawable->is_pixmap)
 324       return;
 325 #else
 326    (void)drawable;
 327 #endif
 328
 329    (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
 330                                                 dri_drawable->loaderPrivate);
 331 }
 332
 333 /**
 334  * This is called when we need to set up GL rendering to a new X window.
 335  */
 336 boolean
 337 dri_create_buffer(__DRIscreen * sPriv,
 338                   __DRIdrawable * dPriv,
 339                   const __GLcontextModes * visual, boolean isPixmap)
 340 {
 341    struct dri_screen *screen = sPriv->private;
 342    struct dri_drawable *drawable = NULL;
 343    int i;
 344
 345    if (isPixmap)
 346       goto fail;                       /* not implemented */
 347
 348    drawable = CALLOC_STRUCT(dri_drawable);
 349    if (drawable == NULL)
 350       goto fail;
 351
 352    if (visual->redBits == 8) {
 353       if (visual->alphaBits == 8)
 354          drawable->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 355       else
 356          drawable->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 357    } else {
 358       drawable->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 359    }
 360
 361    switch(visual->depthBits) {
 362    default:
 363    case 0:
 364       drawable->depth_stencil_format = PIPE_FORMAT_NONE;
 365       break;
 366    case 16:
 367       drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 368       break;
 369    case 24:
 370       if (visual->stencilBits == 0) {
 371          drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
 372                                           PIPE_FORMAT_Z24X8_UNORM:
 373                                           PIPE_FORMAT_X8Z24_UNORM;
 374       } else {
 375          drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
 376                                           PIPE_FORMAT_Z24S8_UNORM:
 377                                           PIPE_FORMAT_S8Z24_UNORM;
 378       }
 379       break;
 380    case 32:
 381       drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 382       break;
 383    }
 384
 385    drawable->stfb = st_create_framebuffer(visual,
 386                                           drawable->color_format,
 387                                           drawable->depth_stencil_format,
 388                                           drawable->depth_stencil_format,
 389                                           dPriv->w,
 390                                           dPriv->h, (void *)drawable);
 391    if (drawable->stfb == NULL)
 392       goto fail;
 393
 394    drawable->sPriv = sPriv;
 395    drawable->dPriv = dPriv;
 396    dPriv->driverPrivate = (void *)drawable;
 397
 398    /* setup dri2 buffers information */
 399    /* TODO incase of double buffer visual, delay fake creation */
 400    i = 0;
 401    if (sPriv->dri2.loader
 402        && (sPriv->dri2.loader->base.version > 2)
 403        && (sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
 404       drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 405       drawable->attachments[i++] = visual->rgbBits;
 406       if (!screen->auto_fake_front)  {
 407          drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 408          drawable->attachments[i++] = visual->rgbBits;
 409       }
 410       if (visual->doubleBufferMode) {
 411          drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 412          drawable->attachments[i++] = visual->rgbBits;
 413       }
 414       if (visual->depthBits && visual->stencilBits) {
 415          drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 416          drawable->attachments[i++] = visual->depthBits + visual->stencilBits;
 417       } else if (visual->depthBits) {
 418          drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 419          drawable->attachments[i++] = visual->depthBits;
 420       } else if (visual->stencilBits) {
 421          drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 422          drawable->attachments[i++] = visual->stencilBits;
 423       }
 424       drawable->num_attachments = i / 2;
 425    } else {
 426       drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 427       if (!screen->auto_fake_front)
 428          drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
 429       if (visual->doubleBufferMode)
 430          drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 431       if (visual->depthBits && visual->stencilBits)
 432          drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 433       else if (visual->depthBits)
 434          drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
 435       else if (visual->stencilBits)
 436          drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
 437       drawable->num_attachments = i;
 438    }
 439
 440    drawable->desired_fences = 2;
 441
 442    return GL_TRUE;
 443 fail:
 444    FREE(drawable);
 445    return GL_FALSE;
 446 }
 447
 448 void
 449 dri_destroy_buffer(__DRIdrawable * dPriv)
 450 {
 451    struct dri_drawable *drawable = dri_drawable(dPriv);
 452
 453    st_unreference_framebuffer(drawable->stfb);
 454    drawable->desired_fences = 0;
 455
 456    dri1_swap_fences_clear(drawable);
 457
 458    FREE(drawable);
 459 }
 460
 461 /* vim: set sw=3 ts=8 sts=3 expandtab: */